基于数字图像技术的泡沫沥青效果评价方法研究

Effect Evaluation Method of Foamed Asphalt Based on Digital Image Processing Technology

针对目前泡沫沥青仅凭借经验粗略确定最佳发泡参数条件的不足,该文采用数字图像处理技术,通过对不同发泡条件下泡沫沥青与铣刨料RAI拌和后的混合料进行图像采集,然后进行灰度图像转化、形态学处理、二值图像转化及网格划分等处理过程,计算不同区域内沥青裹覆率,以沥青在混合料中的均匀分散性为指标,对泡沫沥青的发泡效果进行评价并优选发泡参数。结果表明:采用数字图像处理技术能够快速有效地对泡沫沥青均匀分散效果进行评价,可计算出精确的数值作为判断依据优选发泡参数,具有简单快捷、易于实施的优点。

In view of the shortage of determining the optimal foaming parameters of foamed asphalt only by experience,this paper adopted digital image processing technology to collect images of the mixture of foamed asphalt and milled material RAI obtained under different foaming conditions and carried out grayscale image conversion,morphological processing,binary image conversion,and image segmentation,so as to calculate the asphalt wrapping rate in different areas.With the uniform dispersion of asphalt in the mixture as the indicator,the foaming effect of foamed asphalt was evaluated,and the optimal foaming parameters were determined.The results show that the digital image processing technology can quickly and effectively evaluate the uniform dispersion effect of the foamed asphalt,and the accurate value can be calculated as the basis for judging the optimal foaming parameters.The technology has the advantages of simple and quick operation,and it is easy to implement.